Catalinbread Epoch BiasCatalinbread Epoch Bias The Maestro EP 3 Echoplex has been responsible for some of the most iconic tones in rock history. In 2020, we delivered a pared down version of that preamp with the Epoch Boost. The all new Epoch Bias expands on that circuit with a couple crucial differences. The Bias control simulates out of spec parts on the original, adjusting the base gain and body of the EP 3, which adds only a trivial amount of gain on its own. The new